JAMB Chemistry 2025 Objective — Question 12
Question 12 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2025 Objective paper, with the correct answer and a full explanation.
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Which of the following substances is amphoteric?
- A. CO₂
- B. P₄O₁₀
- C. ZnOCorrect
- D. SO₂
Explanation
ZnO is amphoteric — it reacts with both acids (ZnO + H₂SO₄ → ZnSO₄ + H₂O) and bases (ZnO + 2NaOH → Na₂ZnO₂ + H₂O).
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